[FIX] account: set proper account_id one line

When you create a invoice from a sale_order
the account was taken from the journal and
it should comes from the product
or the product_categories and in last resort the journal
and finally fiscal position should have been apply.

It was not the case anymore,
because setting the partner_id prior the account_id
trigger the default_get on the account_id which
in that case take the wrong value

closes odoo/odoo#47267

Solution: set first the account_id then the partner_id
X-original-commit: 857564367691f3f11572f718499c9d22c823c421
Signed-off-by: Quentin De Paoli (qdp) <qdp@openerp.com>

addons/account/models/account_move.py

@@ -1507,12 +1507,6 @@ class AccountMove(models.Model):
             if line.exclude_from_invoice_tab:
                 continue
 
-            # Ensure related fields are well copied.
-            line.partner_id = self.partner_id
-            line.date = self.date
-            line.recompute_tax_line = True
-            line.currency_id = line_currency
-
             # Shortcut to load the demo data.
             # Doing line.account_id triggers a default_get(['account_id']) that could returns a result.
             # A section / note must not have an account_id set.
@@ -1526,6 +1520,19 @@ class AccountMove(models.Model):
             if line.product_id and not line._cache.get('name'):
                 line.name = line._get_computed_name()
 
+            # Compute the account before the partner_id
+            # In case account_followup is installed
+            # Setting the partner will get the account_id in cache
+            # If the account_id is not in cache, it will trigger the default value
+            # Which is wrong in some case
+            # It's better to set the account_id before the partner_id
+            # Ensure related fields are well copied.
+            line.partner_id = self.partner_id
+            line.date = self.date
+            line.recompute_tax_line = True
+            line.currency_id = line_currency
+
+
         self.line_ids._onchange_price_subtotal()
         self._recompute_dynamic_lines(recompute_all_taxes=True)